1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Makita Charger

Discussion in 'Tools and Materials' started by Jupiter01, 5 Aug 2019.

  1. Jupiter01

    Jupiter01

    Joined:
    30 Mar 2015
    Messages:
    1,970
    Thanks Received:
    21
    Country:
    United Kingdom
    I’ve got the DC18RA Makita charger and never quite sure on when my batteries are fully charged.

    Let me explain...

    When I put a depleted battery on charge, there is a humming sound and the red light is lit up. After a while, there is a red and green light. Eventually there is a green-only light but the humming sound continues. I then think that after a further period of time the humming stops - not sure on this final point.


    The third green light never lights up.


    Can someone please clarify how I should determine that the battery is fully charged.
     
  2. Sponsored Links
  3. blup

    blup

    Joined:
    5 Nov 2007
    Messages:
    996
    Thanks Received:
    143
    Country:
    United Kingdom
    As you say, after the red and green light change to green only, the battery should be fully charged.

    The humming is the fan, or some other electronic component. Mine plays music to signal the charging is complete.

    Blup
     
    • Thanks Thanks x 1
  4. JobAndKnock

    JobAndKnock

    Joined:
    30 Sep 2011
    Messages:
    3,545
    Thanks Received:
    688
    Location:
    Lancashire
    Country:
    United Kingdom
    On the DC18RA once charging is complete (all red lights out, ONE green light only one) the fan continues for a while to further cool the battery (although at that stage it can be removed and used immediately it may still be slightly warm to the touch). The tone it plays when it has finished charging can be changed by sliding the battery on then of and on again rapidly which causes the charger to change its tune (there are 4 or 5 as well as a silent mode)
     
    • Like Like x 1
  5. Jupiter01

    Jupiter01

    Joined:
    30 Mar 2015
    Messages:
    1,970
    Thanks Received:
    21
    Country:
    United Kingdom
    Thanks guys. Do you know the purpose of the right most green light? This never lights up
     
  6. JobAndKnock

    JobAndKnock

    Joined:
    30 Sep 2011
    Messages:
    3,545
    Thanks Received:
    688
    Location:
    Lancashire
    Country:
    United Kingdom
    It isn't green at all - it's yellow and it warns you either of the cooling problems such as the fan failing (flashing - in which case it won't charge the battery as doing so would cook the battery pack) or that the battery is "conditioning" (solid yellow - which I think means that the charger is attempting to balance the cell charge, as after a long period in storage). Never seen the latter, but I have seen the former when grit from sand blasting got inside my charger and killed the fan bearings. Try this video link as it explains it as well and shows the charger in use

    Pretty robust, but basically almost unrepairable (at least economically) should they fail. I've killed only one in more than 12 years of trade use of Makita tools
     
    • Thanks Thanks x 2
  7. Jupiter01

    Jupiter01

    Joined:
    30 Mar 2015
    Messages:
    1,970
    Thanks Received:
    21
    Country:
    United Kingdom
    Thanks guys. That’s very clear now and the YouTube video was very helpful too.
     
  8. Sponsored Links
Loading...

Share This Page